Lobelia plant named ‘USLOB13’

ABSTRACT

A new and distinct cultivar of  Lobelia  plant named ‘USLOB13’, characterized by its upright to outwardly spreading, semi-mounding plant habit; vigorous growth habit; freely branching habit; continuously and freely flowering habit; violet-colored flowers; and relatively high temperature tolerant.

Botanical designation: Lobelia hybrida.

Cultivar denomination: ‘USLOB13’.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Lobelia plant, botanically known as Lobelia hybrida and hereinafter referred to by the name ‘USLOB13’.

The new Lobelia plant is a product of a planned breeding program conducted by the Inventor in Higashiomi, Shiga, Japan. The objective of the breeding program is to create new uniform Lobelia cultivars with good vigor, attractive flower coloration and tolerance to high temperatures.

The new Lobelia plant originated from a cross-pollination made by the Inventor on Jun. 17, 2006 of Lobelia hybrida ‘Hot White’, not patented, as the female, or seed, parent with a proprietary seedling selection of Lobelia hybrida identified as code number 06LOBJ-03, not patented, as the male, or pollen, parent. The new Lobelia plant was discovered and selected by the Inventor as a single flowering plant with the progeny of the stated cross-pollination grown in a controlled greenhouse environment in Higashiomi, Shiga, Japan on May 15, 2007.

Asexual reproduction of the Lobelia plant by vegetative cuttings in Higashiomi, Shiga, Japan since May 16, 2007, has shown that the unique features of this new Lobelia plant are stable and reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

Plants of the new Lobelia have not been observed under all possible environmental conditions. The phenotype may vary somewhat with variations in environment such as temperature and light intensity without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘USLOB13’. These characteristics in combination distinguish ‘USLOB13’ as a new and distinct cultivar of Lobelia:

-   -   1. Upright to outwardly spreading, semi-mounding plant habit.     -   2. Vigorous growth habit.     -   3. Freely branching habit.     -   4. Continuously and freely flowering habit.     -   5. Violet-colored flowers.     -   6. Relatively high temperature tolerant.

Plants of the new Lobelia differ from plants of the female parent, ‘Hot White’, in the following characteristics:

-   -   1. Plants of the new Lobelia are more compact than and not as         open as plants of ‘Hot White’.     -   2. Plants of the new Lobelia and ‘Hot White’ differ in flower         color as plants of ‘Hot White’ have white-colored flowers.

Plants of the new Lobelia differ from plants of the male parent selection primarily in flowers color as plants of the male parent selection have blue-colored flowers.

Plants of the new Lobelia can be compared to plants of Lobelia ‘Regatta Lilac’, not patented. In side-by-side comparisons conducted in Bonsall, Calif., plants of the new Lobelia differed from plants of ‘Regatta Lilac’ in the following characteristics:

-   -   1. Plants of the new Lobelia were more mounding than and not as         open as plants of ‘Regatta Lilac’.     -   2. Plants of the new Lobelia and ‘Regatta Lilac’ differed in         flower color as plants of ‘Regatta Lilac’ had lilac-colored         flowers.     -   3. Plants of the new Lobelia were more high temperature-tolerant         than plants of ‘Regatta Lilac’.

Plants of the new Lobelia can also be compared to plants of Lobelia ‘Riviera Lilac’, not patented. In side-by-side comparisons conducted in Bonsall, Calif., plants of the new Lobelia differed from plants of ‘Riviera Lilac’ in the following characteristics:

-   -   1. Plants of the new Lobelia were more mounding than and not as         compact as plants of ‘Riviera Lilac’.     -   2. Plants of the new Lobelia were more freely branching than         plants of ‘Riviera Lilac’.     -   3. Plants of the new Lobelia were more high temperature-tolerant         than plants of ‘Riviera Lilac’.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying colored photographs illustrate the overall appearance of the new Lobelia plant, showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photographs may differ slightly from the color values cited in the detailed botanical description which accurately describe the actual colors of the new Lobelia plant.

The photograph at the bottom of the sheet comprises a side perspective view of a typical flowering plant of ‘USLOB13’ grown in a container.

The photograph at the top of the sheet is a close-up view of typical flowers and leaves of ‘USLOB13’.

DETAILED BOTANICAL DESCRIPTION

Plants used for the aforementioned photographs and following description were grown under conditions which closely approximate commercial production conditions during the autumn in 10-cm containers in a polyethylene-covered greenhouse in Bonsall, Calif. During the production of the plants, day temperatures ranged from 18° C. to 38° C., night temperatures average 18° C. and light levels ranged from 7,000 to 10,000 foot-candles. Plants were two months old when the photographs and description were taken. In the following description, color references are made to The Royal Horticultural Society Colour Chart, 2007 Edition, except where general terms of ordinary dictionary significance are used.

-   Botanical classification: Lobelia hybrida ‘USLOB13’. -   Parentage:     -   -   Female parent.—Lobelia hybrida ‘Hot White’, not patented.         -   Male parent.—Proprietary seedling selection of Lobelia             hybrida identified as code number 06LOBJ-03, not patented. -   Propagation:     -   -   Type cutting.—Vegetative tip cuttings.         -   Time to initiate roots, summer.—About four days at             temperatures ranging from 17° C. to 29° C.         -   Time to initiate roots, winter.—About six days at             temperatures ranging from 17° C. to 21° C.         -   Time to produce a rooted plant, summer.—About 22 days at             temperatures ranging from 17° C. to 29° C.         -   Time to produce a rooted plant, winter.—About 25 days at             temperatures ranging from 17° C. to 21° C.         -   Root description.—Medium in thickness, fibrous; white in             color.         -   Rooting habit.—Moderate branching; medium in density. -   Plant description:     -   -   Form.—Upright to outwardly spreading, semi-mounding plant             habit; freely branching habit with about 16 lateral branches             per plant each primary lateral developing multiple secondary             laterals; vigorous growth habit.         -   Plant height.—About 18 cm.         -   Plant width.—About 36 cm.         -   Lateral branch description.—Length: About 21 cm. Diameter:             About 3 mm. Internode length: About 1.6 cm. Strength:             Strong, flexible. Texture: Pubescent. Color: Close to 146A. -   Foliage description:     -   -   Arrangement.—Alternate, simple; sessile.         -   Length, basal leaves.—About 4.5 cm.         -   Width, basal leaves.—About 1.4 cm.         -   Length, apical leaves.—About 3 cm.         -   Width, apical leaves.—About 5 mm.         -   Shape.—Elliptical to oblanceolate.         -   Apex.—Acute; recurved.         -   Base.—Attenuate.         -   Margin.—Entire or with shallow and irregular serrations.         -   Texture, upper and lower surfaces.—Pubescent.         -   Venation pattern.—Pinnate; arcuate.         -   Color.—Developing leaves, upper surface: Close to 146A.             Developing leaves, lower surface: Close to 146B. Fully             expanded leaves, upper surface: Close to 137B; venation,             close to 137C. Fully expanded leaves, lower surface: Close             to 146B; venation, close to 146B. -   Flower description:     -   -   Flower arrangement, form and habit.—Solitary axillary             flowers with three broad lower (two laterals and one lip)             petals and two narrower upper (banner) petals, petals fused             towards the base into a narrow tube; freely flowering habit             with about 14 to 16 flowers and flower buds per lateral stem             at one time; flowers face upright to outwardly.         -   Natural flowering season.—Under greenhouse conditions,             plants begin flowering about six weeks after planting. Under             outdoor conditions, plants begin flowering during the spring             and flower continuously until frost in California; flowering             indeterminate with new flowers overgrowing older flowers and             leaves.         -   Flower longevity on the plant.—Longevity of individual             flowers is highly dependent on environmental conditions;             flowers typically last about four to five days on the plant;             flowers persistent.         -   Fragrance.—None detected.         -   Flower buds.—Length: About 1 cm. Diameter: About 3.5 mm.             Shape: Obovate. Color: Close to 145C.         -   Flower size.—About 1.3 cm by 1.6 cm.         -   Flower depth (height).—About 1.9 cm.         -   Flower throat diameter.—About 2 mm by 3 mm.         -   Flower tube length.—About 1 cm.         -   Flower tube diameter at base.—About 1.5 mm.         -   Petals.—Arrangement: Single whorl of five petals, petals             fused at the base into a narrow tube; three broad lower (two             laterals and one lip) petals and two narrower upper (banner)             petals. Three lower petals: Lobe length: About 8 mm. Lobe             width: About 5 mm. Shape: Obovate. Apex: Rounded. Margin:             Entire. Texture, upper and lower surfaces: Smooth, glabrous;             velvety. Two upper petals: Lobe length: About 6 mm. Lobe             width: About 2 mm. Shape: Lanceolate. Apex: Rounded. Margin:             Entire. Texture, upper and lower surfaces: Smooth, glabrous;             velvety. Color, all petals: When opening, upper surface:             Close to 85B. When opening, lower surface: Close to 84D.             Fully opened, upper surface: Close to N87C; towards the             base, close to NN155D; central spots, close to N87A; color             becoming closer to 85A with development. Fully opened, lower             surface: Close to 85D; towards the apex, close to 85C; color             becoming closer to 84D with development. Throat: Close to             84D; tiny flecks, close to 84C. Tube: Close to 84D.         -   Sepals.—Arrangement: Single whorl of five sepals, fused at             the base; star-shaped calyx. Length: About 7 mm. Width:             About 1 mm. Shape: Lanceolate. Apex: Acute. Margin: Entire.             Texture, upper and lower surfaces: Pubescent. Color, upper             and lower surfaces: Close to 146A.         -   Peduncles.—Length: About 2.2 cm. Diameter: About 1 mm.             Aspect: About 45° from the lateral stem axis. Strength:             Moderately strong, flexible. Texture: Pubescent. Color:             Close to 146A.         -   Reproductive organs.—Stamens: Quantity per flower: About             five. Filament length: About 6 mm. Filament color: Close to             84B to 84D. Anther length: About 2 mm. Anther shape:             Lanceolate. Anther color: Close to N77C. Pollen amount:             Scarce. Pollen color: Close to 155D. Pistils: Quantity per             flower: One. Pistil length: About 1 cm. Stigma shape: Round.             Stigma color: Close to 92B. Style length: About 7 mm. Style             color: Close to 144C. Ovary color: Close to 144A.         -   Seeds/fruits.—Seed and fruit development have not been             observed. -   Disease/pest resistance: Plants of the new Lobelia have not been     noted to be resistant to pathogens and pests common to Lobelia. -   Temperature tolerance: Plants of the new Lobelia have been observed     to tolerate temperatures from about 1° C. to about 40° C.;     relatively high temperature tolerant. 

1. A new and distinct Lobelia plant named ‘USLOB13’ as illustrated and described. 